Turpentine cup



May 3o, 1.933.

1.. J. LERlo, JR

TURPENTINE CUP Filed Jan. 29, 19:52

Patented May 30, 1933 UNITED STATES PATENT.' y OFFICE LOUIS J. LERIO, JR., OF MOBILE, ALABAMA, ASSIGNOR T0 TH COMTANY, OF IVLOBILE,V ALABAMA TURPENTINE our.

Application med January 29.1932. serial no. 589,569.

This invention relates to turpentine cups and one object of the invention is to provide a cup of the character which while similar in construction to cups now in use is free from objections which develop after a cup has been in use for a short time.

At the present time turpentine cups in general use are formed of galvanized iron but have been found unsatisfactory as the thin galvanized coating on the base metal is so thin that it Wears off and decomposes ducto certain acids in pine gum mixed with rain. The base metal then rusts and if a rusty cup is used, the rust mixes with the gum, discoloring the same and materially lowering the value of rosin made from the gum.

Therefore, one object of the invention is to provide a turpentine cup which may be made of galvanized iron and therefore cheaply manufactured, but has its inside coated by a layer of metal which is not aected by acids in the gum and serves to prevent the zinc coating of the galvanized iron from being eaten away and exposing the base metal which will rust.

Another object of the invention is to coat the cup with a metal having a melting temperature lower than zinc used for coating galvanized sheet iron, thereby permitting the inside of the cup to be coated by a hotdip process and the coating of protecting metal applied without causing the zinc coating to melt and run off of other portions of the cup.

Figure l is a side elevation of my improved cup.

Figure 2 is a top view of the same.

Figure 3 is a section on the line 3 3 of Figure l.

Figure 4 is a section on the line 4 4 of Figure 5.

Figure 5 is a view of the blank.

Like numerals of reference indicate like parts in the different views.

In accordance with this invention a tur pentine cup is manufactured in accordance with the present practice and is made from galvanized sheet iron. Galvanized sheet iron is covered with zinc and no Way has been found to apply more than two ounces per square foot. Therefore, the zinc coating vthe base is verythin and is quickly eaten away by acids in the gum so that after a short time metal is exposed andrusts with the result that the rust becomes mixed with gum caught'in'the cups and causes the gum to turn dark. Also the cups soon rust to such an extent that holes are formed and the cups must be discarded and replaced by new ones.

.After the cups have blanks of galvanized sheet iron the insides are'to be coated with aprotecting coatingof metal which may be pure lead, pure tin, or an alloy of lead and tin. This metal is melted and applled by a hot dip process and is applied directly to the zinc coating of the galvanized sheet iron. Since zinc melts at a temperature of 787 and the metal forming the protecting coating melts at a temperature of 675o V out melting the zinc and since it has an afnity for the zinc it will firmly adhere to the zincV and not iiake off when it cools. Approximately six ounces ofthe lead and/ or tin as alloy per square foot can be applied and therefore the protecting coating will be quite thick. Since only the inside of a Cup need be covered with the protectingcoating, the cost of a finished cup is only slightly greater than cups now in use which are formed of gal. Vvanized sheet iron but the coating will prevent the gum from contacting with the zinc and therefore the zinc will remain intact and the cup cannot rust and cause the gum to turn dark. It will thus be seen that the pro- 85 tecting coating not only prevents gum turning dark, but also preserves the zinc coating and prolongs the life of the cup.

While it has been stated that the lprotecting coating is to be applied to the inside of a cup it will be understood that the apron and other portions of a cup may be coated if so desired.

The blanks may be ycoated before forming the cup, the coated side, of course, to be the inside of the cup.

In the drawing 1 indicates the cup.

2 designates the outer face thereof.

3 designates the coating upon the inner, face of thecup.

this metal can be applied with- .7( 0

Lnnro PATENT CUP i been formed from What is claimed is:

l. A turpentine receptacle formed of galvanized sheet metal and having the inside Coated with metal unaected by acids in gum. y

2. A turpentine cup formed of galvanized metalfand having portions with Which gum contacts coated with lead.

3. A turpentine receptacle formed of galvanized metal and having"v the portion with which the gum contacts coated with an alloy of lead and tin.

4. A turpentine receptacle formed of galvanized metal and having the portion with Which the gum contacts shielded by a protecting coating of metal proof` against acids 1n gum and having ainelting point lower than that of zine used orgalvanizing the base metal. Y

5. As an improved article of manufacture, a turpentine cup of galvanized metal provided with an inner coating embodying lead and vtin of a nature to prevent discoloration of the material contained therein. Y

In testimony whereof, I alx my signature.

LoUis Y J. LERio, JR. 

